Remove dates from search results

How to remove dates from search results?
I have asked this question before and I got the reply from author, to add following code:
body.search .entry-date {
display: none;
}

@media only screen and (min-width:240px) and (max-width:770px) {
post-meta span.entry-date {
display: none;
}
}

body.search-results .post .entry-meta {
display: none;
}

But still I get dates showing in results. I know it takes time for search results. But its already a long time and also my recent new posts also showing dates in search even though the code is present.

Please help. Thanks.